If you are having problems with your iRobot Roomba 400 Robot Vacuum, you are not alone. Many iRobot Roomba 400 owners experience issues with their robot vacuum from time to time, and it can be frustrating to deal with these problems.
The iRobot Roomba 400 will tell you when something is wrong with a two-tone “uh-oh”.
Number of beeps after “uh-oh”
Cause
Solution
No beep
A wheel is stuck or is not touching the ground
Pick up Roomba, place it down securely on the floor and touch the clean button to restart the cycle
1 beep
The main brushes cannot turn
Turn over Roomba and remove the brush guard by pushing the two yellow tabs. Remove the brushes, clear any obstructions, and replace them again
2 beeps
The side brush cannot turn
Turn over Roomba. Look to see if something is wrapped around the side brush. Remove the side brush with a screwdriver and check for string or hair that may be wrapped around it
3 beeps
The vacuum cannot run
Remove and empty Roomba’s bin.
4 beeps
A wheel cannot run
Your Roomba may be stuck or something may be wrapped
around a wheel. Look for something wrapped around the
wheels. Push them in and out and make sure they turn
easily
5 beeps
The cliff sensors have failed or are blocked
Turn over Roomba and clear any debris that might be
caught underneath the front bumper in the cliff sensors. You can also use compressed air to clean them out.
6 beeps
Wheel obstruction or a robot attempting to drive over an obstacle
Turn over Roomba and remove any obstructions that
Prevent the wheels from seating all the way up into
Roomba’s body. Also, remove any obstacles that Roomba
could drive over.
9 beeps
Sensor error
Please contact iRobot Customer Support.
10 beeps
Roomba is stuck
Pick up Roomba and start it again somewhere else. Use a
virtual wall or other barrier to keep Roomba away from the